Method for predicting call quality and call quality prediction service apparatus for performing the same

Abstract

Disclosed herein is a method for predicting a call quality with respect to the other side by one side of the first and second Internet communication apparatuses, the method comprising: performing a transmission test for predicting call quality between one side and other side through address information of the one side or address information of the other side; and sequentially completing a call quality prediction regarding a relay section formed between the first and second Internet communication apparatuses and mutually adjacent call quality prediction apparatuses in at least one media relay apparatus when there is at least one media relay apparatus that performs media relay among the relay apparatuses between the first and second internet communication apparatuses.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part application, and claims the benefit under 35 U.S.C. §§ 120 and 365 of PCT Application No. PCT / KR2017 / 000839, filed on Jan. 24, 2017, which is hereby incorporated by reference. PCT / KR2017 / 000839 also claimed priorities from Korean Patent Application No. 10-2016-0008727 filed on Jan. 25, 2016, Korean Patent Application No. 10-2016-0173727 filed on Dec. 19, 2016, and Korean Patent Application No. 10-2017-0011333 filed on Jan. 24, 2017, which are hereby incorporated by reference.BACKGROUNDField[0002]The present invention relates to a technology of predicting call quality, and more particularly, to a method for predicting call quality and a call quality prediction service apparatus for performing the method, which can predict call quality through a transmission test using an SIP transaction request and an SIP transaction response without a process of generating an actual call between Internet communic...

AI Technical Summary

Benefits of technology

[0024]The disclosed technology may have the following effects. However, since it is not meant that a specific embodiment should include all of the following effects or include only the following effects, the right scope of the disclosed technology should not be construed as limited thereby.

[0025]According to an embodiment of the present invention, a method for predicting call quality and a call quality prediction service apparatus for performing the method can provide an opportunity to take other measures when the call quality is predicted to be lower than a predetermined reference level by predicting the call quality in advance before connection of the actual call.

[0026]According to an embodiment of the present invention, a method for predicting call quality and a call quality prediction service apparatus for performing the method can avoid unnecessary prediction tasks regarding almost simultaneously overlapping sections in the call quality prediction between Internet phone terminals by predicting the call quality for each section on an expected route of media and managing for a determined expiration time through a cache memory.

[0027]According to an embodiment of the present invention, a method for predicting call quality and a call quality prediction service apparatus for performing the method can prevent a transmission test for the call quality prediction from overlapping when sections overlap in another call quality prediction process and thus enable efficient network operation by distinguishing sections when there is an intermediate node that performs media relay in the same environment as an actual call connection process, predicting the call quality, and storing the prediction result in a cache.

[0028]According to an embodiment of the present invention, a method for predicting call quality and a call quality prediction service apparatus for performing the method can refer to the call quality before an actual call is connected, by providing a method of measuring the current state in terms of call quality in the case of an Internet phone terminal in an Internet phone call waiting state and a method of predicting the call quality between a caller and a called side for each section before the actual call connection.

[0029]According to an embodiment of the present invention, a method for predicting call quality and a call quality prediction service apparatus for performing the method can generate an RTP / RTCP media traffic or a fake UDP traffic regardless of whether or not an actual media for a call is included between the Internet phone terminal and the Internet phone server or between the ends of actual call connection, then calculate a Round Trip Time (RTT) of each packet and a packet loss rate, check the integrity of original data to prepare for a possibility of packet damage there is a wireless section.

Problems solved by technology

The Internet phones using a typical SIP protocol have a limitation in that the call quality may be deteriorated by the overload of a terminal compared to a circuit switching type of telephone in which the actual bandwidth is physically guaranteed or by the system and network congestion state of the intermediate nodes such as L2, L3 and L4 switches in a packet switching network.

Images